example-osv-nodejs

Example NodeJS application for OSv

Simple NodeJS application is provided (server.js) with configuration files that are needed by UniK.

Configuration files

manifest.yaml

image_size: 1GB

This file tells UniK what logical filesystem size would we like to use for the unikernel.

meta/run.yaml

config_set:
   conf1:
      main: server.js
      env:
         PORT: 3000

config_set_default: conf1

This file describes our NodeJS project structure. A single configuration set conf1 (that is also set as default) is specified. It tells UniK what JavaScript file to run on boot (server.js) and what environment variables to set inside unikernel (PORT=3000).

Build command

Prepare application

You must install some NodeJS libraries prior using UniK to build unikernel for you. Make sure that you have version 4.x of node installed:

$ node -v
4.3.0

Then install required libraries:

$ npm install

That's it, application is prepared. Go on, build unikernel for it.

Build

$ unik build \
   --name osv-nodejs-example \
   --path ./ \
   --base osv \
   --language nodejs \
   --provider [qemu|openstack]